1/*
  2 * HID Sensors Driver
  3 * Copyright (c) 2012, Intel Corporation.
  4 *
  5 * This program is free software; you can redistribute it and/or modify it
  6 * under the terms and conditions of the GNU General Public License,
  7 * version 2, as published by the Free Software Foundation.
  8 *
  9 * This program is distributed in the hope it will be useful, but WITHOUT
 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 12 * more details.
 13 *
 14 * You should have received a copy of the GNU General Public License along with
 15 * this program; if not, write to the Free Software Foundation, Inc.,
 16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 17 *
 18 */
 19#include <linux/device.h>
 20#include <linux/hid.h>
 21#include <linux/module.h>
 22#include <linux/slab.h>
 23#include <linux/mfd/core.h>
 24#include <linux/list.h>
 25#include <linux/hid-sensor-ids.h>
 26#include <linux/hid-sensor-hub.h>
 27#include "hid-ids.h"
 28
 29#define HID_SENSOR_HUB_ENUM_QUIRK	0x01
 30
 31/**
 32 * struct sensor_hub_pending - Synchronous read pending information
 33 * @status:		Pending status true/false.
 34 * @ready:		Completion synchronization data.
 35 * @usage_id:		Usage id for physical device, E.g. Gyro usage id.
 36 * @attr_usage_id:	Usage Id of a field, E.g. X-AXIS for a gyro.
 37 * @raw_size:		Response size for a read request.
 38 * @raw_data:		Place holder for received response.
 39 */
 40struct sensor_hub_pending {
 41	bool status;
 42	struct completion ready;
 43	u32 usage_id;
 44	u32 attr_usage_id;
 45	int raw_size;
 46	u8  *raw_data;
 47};
 48
 49/**
 50 * struct sensor_hub_data - Hold a instance data for a HID hub device
 51 * @hsdev:		Stored hid instance for current hub device.
 52 * @mutex:		Mutex to serialize synchronous request.
 53 * @lock:		Spin lock to protect pending request structure.
 54 * @pending:		Holds information of pending sync read request.
 55 * @dyn_callback_list:	Holds callback function
 56 * @dyn_callback_lock:	spin lock to protect callback list
 57 * @hid_sensor_hub_client_devs:	Stores all MFD cells for a hub instance.
 58 * @hid_sensor_client_cnt: Number of MFD cells, (no of sensors attached).
 59 * @ref_cnt:		Number of MFD clients have opened this device
 60 */
 61struct sensor_hub_data {
 62	struct mutex mutex;
 63	spinlock_t lock;
 64	struct sensor_hub_pending pending;
 65	struct list_head dyn_callback_list;
 66	spinlock_t dyn_callback_lock;
 67	struct mfd_cell *hid_sensor_hub_client_devs;
 68	int hid_sensor_client_cnt;
 69	unsigned long quirks;
 70	int ref_cnt;
 71};
 72
 73/**
 74 * struct hid_sensor_hub_callbacks_list - Stores callback list
 75 * @list:		list head.
 76 * @usage_id:		usage id for a physical device.
 77 * @usage_callback:	Stores registered callback functions.
 78 * @priv:		Private data for a physical device.
 79 */
 80struct hid_sensor_hub_callbacks_list {
 81	struct list_head list;
 82	u32 usage_id;
 83	struct hid_sensor_hub_device *hsdev;
 84	struct hid_sensor_hub_callbacks *usage_callback;
 85	void *priv;
 86};
 87
 88static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev,
 89						int dir)
 90{
 91	struct hid_report *report;
 92
 93	list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) {
 94		if (report->id == id)
 95			return report;
 96	}
 97	hid_warn(hdev, "No report with id 0x%x found\n", id);
 98
 99	return NULL;
100}
101
102static int sensor_hub_get_physical_device_count(struct hid_device *hdev)
103{
104	int i;
105	int count = 0;
106
107	for (i = 0; i < hdev->maxcollection; ++i) {
108		struct hid_collection *collection = &hdev->collection[i];
109		if (collection->type == HID_COLLECTION_PHYSICAL)
110			++count;
111	}
112
113	return count;
114}
115
116static void sensor_hub_fill_attr_info(
117		struct hid_sensor_hub_attribute_info *info,
118		s32 index, s32 report_id, struct hid_field *field)
119{
120	info->index = index;
121	info->report_id = report_id;
122	info->units = field->unit;
123	info->unit_expo = field->unit_exponent;
124	info->size = (field->report_size * field->report_count)/8;
125	info->logical_minimum = field->logical_minimum;
126	info->logical_maximum = field->logical_maximum;
127}
128
129static struct hid_sensor_hub_callbacks *sensor_hub_get_callback(
130					struct hid_device *hdev,
131					u32 usage_id,
132					int collection_index,
133					struct hid_sensor_hub_device **hsdev,
134					void **priv)
135{
136	struct hid_sensor_hub_callbacks_list *callback;
137	struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
138
139	spin_lock(&pdata->dyn_callback_lock);
140	list_for_each_entry(callback, &pdata->dyn_callback_list, list)
141		if (callback->usage_id == usage_id &&
142			(collection_index >=
143				callback->hsdev->start_collection_index) &&
144			(collection_index <
145				callback->hsdev->end_collection_index)) {
146			*priv = callback->priv;
147			*hsdev = callback->hsdev;
148			spin_unlock(&pdata->dyn_callback_lock);
149			return callback->usage_callback;
150		}
151	spin_unlock(&pdata->dyn_callback_lock);
152
153	return NULL;
154}
155
156int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev,
157			u32 usage_id,
158			struct hid_sensor_hub_callbacks *usage_callback)
159{
160	struct hid_sensor_hub_callbacks_list *callback;
161	struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev);
162
163	spin_lock(&pdata->dyn_callback_lock);
164	list_for_each_entry(callback, &pdata->dyn_callback_list, list)
165		if (callback->usage_id == usage_id &&
166						callback->hsdev == hsdev) {
167			spin_unlock(&pdata->dyn_callback_lock);
168			return -EINVAL;
169		}
170	callback = kzalloc(sizeof(*callback), GFP_ATOMIC);
171	if (!callback) {
172		spin_unlock(&pdata->dyn_callback_lock);
173		return -ENOMEM;
174	}
175	callback->hsdev = hsdev;
176	callback->usage_callback = usage_callback;
177	callback->usage_id = usage_id;
178	callback->priv = NULL;
179	list_add_tail(&callback->list, &pdata->dyn_callback_list);
180	spin_unlock(&pdata->dyn_callback_lock);
181
182	return 0;
183}
184EXPORT_SYMBOL_GPL(sensor_hub_register_callback);
185
186int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev,
187				u32 usage_id)
188{
189	struct hid_sensor_hub_callbacks_list *callback;
190	struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev);
191
192	spin_lock(&pdata->dyn_callback_lock);
193	list_for_each_entry(callback, &pdata->dyn_callback_list, list)
194		if (callback->usage_id == usage_id &&
195						callback->hsdev == hsdev) {
196			list_del(&callback->list);
197			kfree(callback);
198			break;
199		}
200	spin_unlock(&pdata->dyn_callback_lock);
201
202	return 0;
203}
204EXPORT_SYMBOL_GPL(sensor_hub_remove_callback);
205
206int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
207				u32 field_index, s32 value)
208{
209	struct hid_report *report;
210	struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
211	int ret = 0;
212
213	mutex_lock(&data->mutex);
214	report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT);
215	if (!report || (field_index >= report->maxfield)) {
216		ret = -EINVAL;
217		goto done_proc;
218	}
219	hid_set_field(report->field[field_index], 0, value);
220	hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT);
221	hid_hw_wait(hsdev->hdev);
222
223done_proc:
224	mutex_unlock(&data->mutex);
225
226	return ret;
227}
228EXPORT_SYMBOL_GPL(sensor_hub_set_feature);
229
230int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
231				u32 field_index, s32 *value)
232{
233	struct hid_report *report;
234	struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
235	int ret = 0;
236
237	mutex_lock(&data->mutex);
238	report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT);
239	if (!report || (field_index >= report->maxfield) ||
240	    report->field[field_index]->report_count < 1) {
241		ret = -EINVAL;
242		goto done_proc;
243	}
244	hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT);
245	hid_hw_wait(hsdev->hdev);
246	*value = report->field[field_index]->value[0];
247
248done_proc:
249	mutex_unlock(&data->mutex);
250
251	return ret;
252}
253EXPORT_SYMBOL_GPL(sensor_hub_get_feature);
254
255
256int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
257					u32 usage_id,
258					u32 attr_usage_id, u32 report_id)
259{
260	struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
261	unsigned long flags;
262	struct hid_report *report;
263	int ret_val = 0;
264
265	mutex_lock(&data->mutex);
266	memset(&data->pending, 0, sizeof(data->pending));
267	init_completion(&data->pending.ready);
268	data->pending.usage_id = usage_id;
269	data->pending.attr_usage_id = attr_usage_id;
270	data->pending.raw_size = 0;
271
272	spin_lock_irqsave(&data->lock, flags);
273	data->pending.status = true;
274	spin_unlock_irqrestore(&data->lock, flags);
275	report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT);
276	if (!report)
277		goto err_free;
278
279	hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT);
280	wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5);
281	switch (data->pending.raw_size) {
282	case 1:
283		ret_val = *(u8 *)data->pending.raw_data;
284		break;
285	case 2:
286		ret_val = *(u16 *)data->pending.raw_data;
287		break;
288	case 4:
289		ret_val = *(u32 *)data->pending.raw_data;
290		break;
291	default:
292		ret_val = 0;
293	}
294	kfree(data->pending.raw_data);
295
296err_free:
297	data->pending.status = false;
298	mutex_unlock(&data->mutex);
299
300	return ret_val;
301}
302EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value);
303
304int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev,
305				u32 report_id, int field_index, u32 usage_id)
306{
307	struct hid_report *report;
308	struct hid_field *field;
309	int i;
310
311	report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT);
312	if (!report || (field_index >= report->maxfield))
313		goto done_proc;
314
315	field = report->field[field_index];
316	for (i = 0; i < field->maxusage; ++i) {
317		if (field->usage[i].hid == usage_id)
318			return field->usage[i].usage_index;
319	}
320
321done_proc:
322	return -EINVAL;
323}
324EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index);
325
326int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev,
327				u8 type,
328				u32 usage_id,
329				u32 attr_usage_id,
330				struct hid_sensor_hub_attribute_info *info)
331{
332	int ret = -1;
333	int i;
334	struct hid_report *report;
335	struct hid_field *field;
336	struct hid_report_enum *report_enum;
337	struct hid_device *hdev = hsdev->hdev;
338
339	/* Initialize with defaults */
340	info->usage_id = usage_id;
341	info->attrib_id = attr_usage_id;
342	info->report_id = -1;
343	info->index = -1;
344	info->units = -1;
345	info->unit_expo = -1;
346
347	report_enum = &hdev->report_enum[type];
348	list_for_each_entry(report, &report_enum->report_list, list) {
349		for (i = 0; i < report->maxfield; ++i) {
350			field = report->field[i];
351			if (field->maxusage) {
352				if (field->physical == usage_id &&
353					(field->logical == attr_usage_id ||
354					field->usage[0].hid ==
355							attr_usage_id) &&
356					(field->usage[0].collection_index >=
357					hsdev->start_collection_index) &&
358					(field->usage[0].collection_index <
359					hsdev->end_collection_index)) {
360
361					sensor_hub_fill_attr_info(info, i,
362								report->id,
363								field);
364					ret = 0;
365					break;
366				}
367			}
368		}
369
370	}
371
372	return ret;
373}
374EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info);
375
376#ifdef CONFIG_PM
377static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message)
378{
379	struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
380	struct hid_sensor_hub_callbacks_list *callback;
381
382	hid_dbg(hdev, " sensor_hub_suspend\n");
383	spin_lock(&pdata->dyn_callback_lock);
384	list_for_each_entry(callback, &pdata->dyn_callback_list, list) {
385		if (callback->usage_callback->suspend)
386			callback->usage_callback->suspend(
387					callback->hsdev, callback->priv);
388	}
389	spin_unlock(&pdata->dyn_callback_lock);
390
391	return 0;
392}
393
394static int sensor_hub_resume(struct hid_device *hdev)
395{
396	struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
397	struct hid_sensor_hub_callbacks_list *callback;
398
399	hid_dbg(hdev, " sensor_hub_resume\n");
400	spin_lock(&pdata->dyn_callback_lock);
401	list_for_each_entry(callback, &pdata->dyn_callback_list, list) {
402		if (callback->usage_callback->resume)
403			callback->usage_callback->resume(
404					callback->hsdev, callback->priv);
405	}
406	spin_unlock(&pdata->dyn_callback_lock);
407
408	return 0;
409}
410
411static int sensor_hub_reset_resume(struct hid_device *hdev)
412{
413	return 0;
414}
415#endif
416
417/*
418 * Handle raw report as sent by device
419 */
420static int sensor_hub_raw_event(struct hid_device *hdev,
421		struct hid_report *report, u8 *raw_data, int size)
422{
423	int i;
424	u8 *ptr;
425	int sz;
426	struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
427	unsigned long flags;
428	struct hid_sensor_hub_callbacks *callback = NULL;
429	struct hid_collection *collection = NULL;
430	void *priv = NULL;
431	struct hid_sensor_hub_device *hsdev = NULL;
432
433	hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n",
434			 report->id, size, report->type);
435	hid_dbg(hdev, "maxfield:%d\n", report->maxfield);
436	if (report->type != HID_INPUT_REPORT)
437		return 1;
438
439	ptr = raw_data;
440	ptr++; /* Skip report id */
441
442	spin_lock_irqsave(&pdata->lock, flags);
443
444	for (i = 0; i < report->maxfield; ++i) {
445		hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n",
446				i, report->field[i]->usage->collection_index,
447				report->field[i]->usage->hid,
448				(report->field[i]->report_size *
449					report->field[i]->report_count)/8);
450		sz = (report->field[i]->report_size *
451					report->field[i]->report_count)/8;
452		if (pdata->pending.status && pdata->pending.attr_usage_id ==
453				report->field[i]->usage->hid) {
454			hid_dbg(hdev, "data was pending ...\n");
455			pdata->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC);
456			if (pdata->pending.raw_data)
457				pdata->pending.raw_size = sz;
458			else
459				pdata->pending.raw_size = 0;
460			complete(&pdata->pending.ready);
461		}
462		collection = &hdev->collection[
463				report->field[i]->usage->collection_index];
464		hid_dbg(hdev, "collection->usage %x\n",
465					collection->usage);
466
467		callback = sensor_hub_get_callback(hdev,
468				report->field[i]->physical,
469				report->field[i]->usage[0].collection_index,
470				&hsdev, &priv);
471
472		if (callback && callback->capture_sample) {
473			if (report->field[i]->logical)
474				callback->capture_sample(hsdev,
475					report->field[i]->logical, sz, ptr,
476					callback->pdev);
477			else
478				callback->capture_sample(hsdev,
479					report->field[i]->usage->hid, sz, ptr,
480					callback->pdev);
481		}
482		ptr += sz;
483	}
484	if (callback && collection && callback->send_event)
485		callback->send_event(hsdev, collection->usage,
486				callback->pdev);
487	spin_unlock_irqrestore(&pdata->lock, flags);
488
489	return 1;
490}
491
492int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev)
493{
494	int ret = 0;
495	struct sensor_hub_data *data =  hid_get_drvdata(hsdev->hdev);
496
497	mutex_lock(&data->mutex);
498	if (!data->ref_cnt) {
499		ret = hid_hw_open(hsdev->hdev);
500		if (ret) {
501			hid_err(hsdev->hdev, "failed to open hid device\n");
502			mutex_unlock(&data->mutex);
503			return ret;
504		}
505	}
506	data->ref_cnt++;
507	mutex_unlock(&data->mutex);
508
509	return ret;
510}
511EXPORT_SYMBOL_GPL(sensor_hub_device_open);
512
513void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev)
514{
515	struct sensor_hub_data *data =  hid_get_drvdata(hsdev->hdev);
516
517	mutex_lock(&data->mutex);
518	data->ref_cnt--;
519	if (!data->ref_cnt)
520		hid_hw_close(hsdev->hdev);
521	mutex_unlock(&data->mutex);
522}
523EXPORT_SYMBOL_GPL(sensor_hub_device_close);
524
525static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc,
526		unsigned int *rsize)
527{
528	int index;
529	struct sensor_hub_data *sd =  hid_get_drvdata(hdev);
530	unsigned char report_block[] = {
531				0x0a,  0x16, 0x03, 0x15, 0x00, 0x25, 0x05};
532	unsigned char power_block[] = {
533				0x0a,  0x19, 0x03, 0x15, 0x00, 0x25, 0x05};
534
535	if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) {
536		hid_dbg(hdev, "No Enum quirks\n");
537		return rdesc;
538	}
539
540	/* Looks for power and report state usage id and force to 1 */
541	for (index = 0; index < *rsize; ++index) {
542		if (((*rsize - index) > sizeof(report_block)) &&
543			!memcmp(&rdesc[index], report_block,
544						sizeof(report_block))) {
545			rdesc[index + 4] = 0x01;
546			index += sizeof(report_block);
547		}
548		if (((*rsize - index) > sizeof(power_block)) &&
549			!memcmp(&rdesc[index], power_block,
550						sizeof(power_block))) {
551			rdesc[index + 4] = 0x01;
552			index += sizeof(power_block);
553		}
554	}
555
556	return rdesc;
557}
558
559static int sensor_hub_probe(struct hid_device *hdev,
560				const struct hid_device_id *id)
561{
562	int ret;
563	struct sensor_hub_data *sd;
564	int i;
565	char *name;
566	int dev_cnt;
567	struct hid_sensor_hub_device *hsdev;
568	struct hid_sensor_hub_device *last_hsdev = NULL;
569
570	sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL);
571	if (!sd) {
572		hid_err(hdev, "cannot allocate Sensor data\n");
573		return -ENOMEM;
574	}
575
576	hid_set_drvdata(hdev, sd);
577	sd->quirks = id->driver_data;
578
579	spin_lock_init(&sd->lock);
580	spin_lock_init(&sd->dyn_callback_lock);
581	mutex_init(&sd->mutex);
582	ret = hid_parse(hdev);
583	if (ret) {
584		hid_err(hdev, "parse failed\n");
585		return ret;
586	}
587	INIT_LIST_HEAD(&hdev->inputs);
588
589	ret = hid_hw_start(hdev, 0);
590	if (ret) {
591		hid_err(hdev, "hw start failed\n");
592		return ret;
593	}
594	INIT_LIST_HEAD(&sd->dyn_callback_list);
595	sd->hid_sensor_client_cnt = 0;
596
597	dev_cnt = sensor_hub_get_physical_device_count(hdev);
598	if (dev_cnt > HID_MAX_PHY_DEVICES) {
599		hid_err(hdev, "Invalid Physical device count\n");
600		ret = -EINVAL;
601		goto err_stop_hw;
602	}
603	sd->hid_sensor_hub_client_devs = kzalloc(dev_cnt *
604						sizeof(struct mfd_cell),
605						GFP_KERNEL);
606	if (sd->hid_sensor_hub_client_devs == NULL) {
607		hid_err(hdev, "Failed to allocate memory for mfd cells\n");
608			ret = -ENOMEM;
609			goto err_stop_hw;
610	}
611
612	for (i = 0; i < hdev->maxcollection; ++i) {
613		struct hid_collection *collection = &hdev->collection[i];
614
615		if (collection->type == HID_COLLECTION_PHYSICAL) {
616
617			hsdev = kzalloc(sizeof(*hsdev), GFP_KERNEL);
618			if (!hsdev) {
619				hid_err(hdev, "cannot allocate hid_sensor_hub_device\n");
620				ret = -ENOMEM;
621				goto err_no_mem;
622			}
623			hsdev->hdev = hdev;
624			hsdev->vendor_id = hdev->vendor;
625			hsdev->product_id = hdev->product;
626			hsdev->start_collection_index = i;
627			if (last_hsdev)
628				last_hsdev->end_collection_index = i;
629			last_hsdev = hsdev;
630			name = kasprintf(GFP_KERNEL, "HID-SENSOR-%x",
631					collection->usage);
632			if (name == NULL) {
633				hid_err(hdev, "Failed MFD device name\n");
634					ret = -ENOMEM;
635					goto err_no_mem;
636			}
637			sd->hid_sensor_hub_client_devs[
638				sd->hid_sensor_client_cnt].id =
639							PLATFORM_DEVID_AUTO;
640			sd->hid_sensor_hub_client_devs[
641				sd->hid_sensor_client_cnt].name = name;
642			sd->hid_sensor_hub_client_devs[
643				sd->hid_sensor_client_cnt].platform_data =
644							hsdev;
645			sd->hid_sensor_hub_client_devs[
646				sd->hid_sensor_client_cnt].pdata_size =
647							sizeof(*hsdev);
648			hid_dbg(hdev, "Adding %s:%d\n", name,
649					hsdev->start_collection_index);
650			sd->hid_sensor_client_cnt++;
651		}
652	}
653	if (last_hsdev)
654		last_hsdev->end_collection_index = i;
655
656	ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs,
657		sd->hid_sensor_client_cnt, NULL, 0, NULL);
658	if (ret < 0)
659		goto err_no_mem;
660
661	return ret;
662
663err_no_mem:
664	for (i = 0; i < sd->hid_sensor_client_cnt; ++i) {
665		kfree(sd->hid_sensor_hub_client_devs[i].name);
666		kfree(sd->hid_sensor_hub_client_devs[i].platform_data);
667	}
668	kfree(sd->hid_sensor_hub_client_devs);
669err_stop_hw:
670	hid_hw_stop(hdev);
671
672	return ret;
673}
674
675static void sensor_hub_remove(struct hid_device *hdev)
676{
677	struct sensor_hub_data *data = hid_get_drvdata(hdev);
678	unsigned long flags;
679	int i;
680
681	hid_dbg(hdev, " hardware removed\n");
682	hid_hw_close(hdev);
683	hid_hw_stop(hdev);
684	spin_lock_irqsave(&data->lock, flags);
685	if (data->pending.status)
686		complete(&data->pending.ready);
687	spin_unlock_irqrestore(&data->lock, flags);
688	mfd_remove_devices(&hdev->dev);
689	for (i = 0; i < data->hid_sensor_client_cnt; ++i) {
690		kfree(data->hid_sensor_hub_client_devs[i].name);
691		kfree(data->hid_sensor_hub_client_devs[i].platform_data);
692	}
693	kfree(data->hid_sensor_hub_client_devs);
694	hid_set_drvdata(hdev, NULL);
695	mutex_destroy(&data->mutex);
696}
697
698static const struct hid_device_id sensor_hub_devices[] = {
699	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0,
700			USB_DEVICE_ID_INTEL_HID_SENSOR_0),
701			.driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
702	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1,
703			USB_DEVICE_ID_INTEL_HID_SENSOR_0),
704			.driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
705	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1,
706			USB_DEVICE_ID_INTEL_HID_SENSOR_1),
707			.driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
708	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0,
709			USB_DEVICE_ID_STM_HID_SENSOR),
710			.driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
711	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS,
712			USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA),
713			.driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
714	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID,
715		     HID_ANY_ID) },
716	{ }
717};
718MODULE_DEVICE_TABLE(hid, sensor_hub_devices);
719
720static struct hid_driver sensor_hub_driver = {
721	.name = "hid-sensor-hub",
722	.id_table = sensor_hub_devices,
723	.probe = sensor_hub_probe,
724	.remove = sensor_hub_remove,
725	.raw_event = sensor_hub_raw_event,
726	.report_fixup = sensor_hub_report_fixup,
727#ifdef CONFIG_PM
728	.suspend = sensor_hub_suspend,
729	.resume = sensor_hub_resume,
730	.reset_resume = sensor_hub_reset_resume,
731#endif
732};
733module_hid_driver(sensor_hub_driver);
734
735MODULE_DESCRIPTION("HID Sensor Hub driver");
736MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
737MODULE_LICENSE("GPL");